cpufreq: backport cpufreq code from msm-3.0 branch

caf msm-3.0 branch

Change-Id: I8a0301831cd645975f17de67077a372ec07e3f01
Signed-off-by: RonGokhale <cips173@gmail.com>
Merge "cpufreq: backport cpufreq code from msm-3.0 branch" into cm-10.1